package com.wang.boot1.service.impl;

import com.wang.boot1.service.WangService;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.concurrent.Callable;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.function.IntBinaryOperator;

public class WangImpl implements WangService {


    public void  ss(){
//        WangService service = this::getInfo->8;
    }

    @Override
    public void getInfo(int x) {
        CopyOnWriteArrayList list=new CopyOnWriteArrayList();
        list.clear();
        LinkedList linkedList= new LinkedList();
        linkedList.getFirst();
        ArrayList arrayList = new ArrayList();
        arrayList.lastIndexOf(2);
        HashMap hashMap = new HashMap();
        hashMap.put(null,1);
        System.out.println(hashMap.get(null));
    }
}
